Bug 1425995 - Add boilerplate to a TypedObject test so it runs only if TypedObject is defined. r=djvj

This will prevent the test from going permaorange when Gecko 59 merges to Beta.

--HG--
extra : rebase_source : 27a825187cbf27bc6254027ce27681d8730e86b5

js/src/jit-test/tests/TypedObject/bug-1415313.js

@@ -1,3 +1,6 @@
+if (!this.hasOwnProperty("TypedObject"))
+  quit();
+
 var Uint32Array = TypedObject.float32.array(3);
 const ONE_MINUS_EPSILON = 1 - Math.pow(2, -53);
 const f = new Float64Array([0, 0]);